[9fans] Re: Dual dialing/forking sessions to increase 9P throughput

[cigar562hfsp952fans@icebubble.org]

"Ethan Gardener" <eekee57@fastmail.fm> writes:

> What's the advantage over fcp(1)? 9p can have numerous requests "in
> flight" at once to work around latency issues, but of all the user
> programs, fcp is probably the only one which takes advantage of this.

The problem is that throughput and responsiveness are enemies.  If
you're trying to push a large quantity of data down a TCP connection,
and try to do anything interactive over that same connection, the
latency will make that interaction very slow.  In order to improve
responsiveness, the transport medium needs to know how to differentiate
between the two kinds of traffic.  In other words, you would need a way
to set different TCP options on 9P messages for different purposes.

"Joe S" <joe@lifesoftserv.com> writes:

> Maybe a file server thats purpose is to mux parts of another file
> sounded like fun. My thoughts are that you could then transer thoes
> chunks on a single destination on seperate connections.

I might be possible to create a file server which interposes itself
between a 9P client and 9P server and bonds multiple network connections
together into a single 9P session.  It would be sort of a userspace
replacement for the kernel's mount driver.  Wait a minute, this problem
can be solved with a filesystem?  Of course... I should have thought of
that.  ;)

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